2026
ICD-10-CM
Diagnosis
Code

R51 Headache

Non-billable
2016–2026

R51 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Headache.

Type 2 excludes

Atypical face pain (G50.1)
Migraine and other headache syndromes (G43-G44)
Trigeminal neuralgia (G50.0)

Codes

Versions

2026
No changes
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
Code changed
- Type 1 excludes
  ~~atypical face pain (G50.1)~~
  ~~migraine and other headache syndromes (G43-G44)~~
  ~~trigeminal neuralgia (G50.0)~~
- Type 2 excludes
  atypical face pain (G50.1)
  migraine and other headache syndromes (G43-G44)
  trigeminal neuralgia (G50.0)
- Inclusion term
  ~~Facial pain NOS~~
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code